Welcome to LookChem.com Sign In|Join Free

CAS

  • or

128806-39-3

Post Buying Request

128806-39-3 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

128806-39-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128806-39-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,0 and 6 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128806-39:
(8*1)+(7*2)+(6*8)+(5*8)+(4*0)+(3*6)+(2*3)+(1*9)=143
143 % 10 = 3
So 128806-39-3 is a valid CAS Registry Number.

128806-39-3Relevant articles and documents

ASYMMETRIC TRANS-ADDITION REACTIONS USING CHIRAL SELENOBINAPHTHYLS

Tomoda, Shuji,Fujita, Ken-Ichi,Iwaoka, Michio

, p. 247 - 252 (2007/10/02)

Asymmetric trans-addition reactions of (E)-phenylpropene, a mechanistically novel reaction, have been achieved by using chiral selenium-containing binaphthyl derivatives.Introduction of an amide group at 2'-position in the binaphthyl skeleton enhances considerably the diastereomeric excess (d.e.) of the asymmetric reaction presumably due to attractive interaction between the nitrogen lone pair and the seleniranium intermediate.Introduction of another chiral center in the amide group further enhances the d.e. as high as 79 percent, which is the highest asymmetric induction ever achieved in the asymmetric trans-addition reaction.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 128806-39-3